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SubjectRe: PROBLEM: 2.6.19.1 Oops while doing Disk IO + playing sound
On Wed 07-02-07 20:45:26, Frank Hartmann wrote:
> you are the first to react on my message. I did not try 2.6.20 uptonow.
>
> What I did in the meantime:
>
> Switched to 2.6.19.2
>
> I run extensivly memtest+ and started something called smrtctl which
> should give more information on my harddisk status. Everything looks
> ok.
>
> From what I read on linux-kernel I came to the conclusion,
> that it might be benifical not using PREMPT. So I changed kernel configuration.
>
> Yesterday I had:
The oops below is from kernel without preempt?

> Feb 6 22:35:44 fantasio kernel: BUG: unable to handle kernel NULL pointer dereference at virtual address 00000029
> Feb 6 22:35:44 fantasio kernel: printing eip:
> Feb 6 22:35:44 fantasio kernel: e0c3b737
> Feb 6 22:35:44 fantasio kernel: *pde = 00000000
> Feb 6 22:35:44 fantasio kernel: Oops: 0000 [#1]
> Feb 6 22:35:44 fantasio kernel: Modules linked in: ext2 cbc blkcipher binfmt_misc bnep rfcomm l2cap nfs nfsd exportfs lockd sunrpc ip_nat_irc ip_nat_ftp ip_conntrack_irc ip_conntrack_ftp xt_state ipt_REJECT i
> pt_LOG iptable_mangle iptable_filter iptable_nat ip_nat ip_tables ip_conntrack bridge llc cryptoloop loop sha256 aes it87 hwmon_vid i2c_isa i2c_core md5 ipv6 af_packet radeon drm dm_crypt dm_mod snd_via82xx sn
> d_ac97_codec snd_ac97_bus snd_pcm_oss snd_mixer_oss analog 8250_pnp 8250 serial_core snd_pcm snd_timer snd_page_alloc snd_mpu401_uart gameport snd_rawmidi rtc snd soundcore prism54 via_agp agpgart firmware_cla
> ss evdev sd_mod ext3 jbd mbcache raid1 raid0 multipath linear md_mod ide_cd cdrom ide_disk usbhid usb_storage via_rhine mii via82cxxx ide_core ehci_hcd sym53c8xx scsi_transport_spi uhci_hcd usbcore scsi_mod un
> ix
> Feb 6 22:35:44 fantasio kernel: CPU: 0
> Feb 6 22:35:44 fantasio kernel: EIP: 0060:[pg0+546215735/1070253056] Not tainted VLI
> Feb 6 22:35:44 fantasio kernel: EFLAGS: 00010213 (2.6.19.2 #1)
> Feb 6 22:35:44 fantasio kernel: EIP is at journal_grab_journal_head+0x2/0x14 [jbd]
> Feb 6 22:35:44 fantasio kernel: eax: 00000029 ebx: 00000029 ecx: 00000029 edx: 00000000
> Feb 6 22:35:44 fantasio kernel: esi: c10d2580 edi: 00000000 ebp: c1feb6ec esp: df9fde00
> Feb 6 22:35:44 fantasio kernel: ds: 007b es: 007b ss: 0068
> Feb 6 22:35:44 fantasio kernel: Process kswapd0 (pid: 132, ti=df9fc000 task=dffca590 task.ti=df9fc000)
> Feb 6 22:35:44 fantasio kernel: Stack: e0c375ca 00000246 c1feb720 c24c532c c1186ac0 00000001 e0c6930d 000000d0
> Feb 6 22:35:44 fantasio kernel: 00000001 c02aed00 c012f883 c10d2580 c24c532c c01344b1 df9fdf1c c0117e5d
> Feb 6 22:35:44 fantasio kernel: df9fdf80 00000020 00000000 00000000 00000020 00000001 00000001 00000000
> Feb 6 22:35:44 fantasio kernel: Call Trace:
> Feb 6 22:35:44 fantasio kernel: [pg0+546198986/1070253056] journal_try_to_free_buffers+0x5e/0xf9 [jbd]
> Feb 6 22:35:44 fantasio kernel: [pg0+546403085/1070253056] ext3_releasepage+0x0/0x72 [ext3]
> Feb 6 22:35:44 fantasio kernel: [try_to_release_page+52/70] try_to_release_page+0x34/0x46
> Feb 6 22:35:44 fantasio kernel: [shrink_inactive_list+1096/1677] shrink_inactive_list+0x448/0x68d
> Feb 6 22:35:44 fantasio kernel: [tasklet_action+55/87] tasklet_action+0x37/0x57
> Feb 6 22:35:44 fantasio kernel: [__pagevec_release+21/29] __pagevec_release+0x15/0x1d
> Feb 6 22:35:45 fantasio kernel: [shrink_active_list+726/734] shrink_active_list+0x2d6/0x2de
> Feb 6 22:35:45 fantasio kernel: [shrink_zone+180/213] shrink_zone+0xb4/0xd5
> Feb 6 22:35:45 fantasio kernel: [kswapd+623/886] kswapd+0x26f/0x376
> Feb 6 22:35:45 fantasio kernel: [autoremove_wake_function+0/53] autoremove_wake_function+0x0/0x35
> Feb 6 22:35:45 fantasio kernel: [kswapd+0/886] kswapd+0x0/0x376
> Feb 6 22:35:45 fantasio kernel: [kthread+173/216] kthread+0xad/0xd8
> Feb 6 22:35:45 fantasio kernel: [kthread+0/216] kthread+0x0/0xd8
> Feb 6 22:35:45 fantasio kernel: [kernel_thread_helper+7/16] kernel_thread_helper+0x7/0x10
> Feb 6 22:35:45 fantasio kernel: =======================
>
> It happened probably while I was running
>
> 408 dd if=/dev/urandom of=crypt.img bs=1M count=20000
>
> The file seems to be more or less complete and the process modified the file later:
>
> ls -l crypt.img
> -rw-r--r-- 1 frank frank 20970175708 Feb 6 22:46 crypt.img
>
> So i do not know if it is related.
>
>
>
> Today I had three complete system freezes(keyboard dead,mouse dead, no
> magic sysreq), but no Oops while doing:
>
> losetup /dev/loop1 /home/frank/tmp/crypt.img
> cryptsetup -y create mycryprt /dev/loop1
> mkfs.ext3 /dev/mapper/mycryprt <-- FREEZE at 'writing superblocks'
>
> I will start using 2.6.20 soon.
OK, thanks for the news. Please, write me when you try out 2.6.20. Just
if it rings bell to someone on this list: It looks like the page had no
buffers but PagePrivate was set. Strange.

Honza
--
Jan Kara <jack@suse.cz>
SuSE CR Labs
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